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tmux/cmd.c
Nicholas Marriott 641191ab20 Support for windows larger than the client. 
This adds two new options, window-size and default-size, and a new
command, resize-window.

The force-width and force-height options, and the session_width and
session_height formats have been removed.

The new window-size option tells tmux how to work out the size of
windows: largest means it picks the size of the largest session,
smallest the smallest session (similar to the old behaviour) and
manual means that it does not automatically resize
windows. aggressive-resize modifies the choice of session for largest
and smallest as it did before.

If a window is in a session attached to a client that is too small,
only part of the window is shown. tmux attempts to keep the cursor
visible, so the part of the window displayed is changed as the cursor
moves (with a small delay, to try and avoid excess redrawing when
applications redraw status lines or similar that are not currently
visible).

Drawing windows which are larger than the client is not as efficient
as those which fit, particularly when the cursor moves, so it is
recommended to avoid using this on slow machines or networks (set
window-size to smallest or manual).

The resize-window command can be used to resize a window manually. If
it is used, the window-size option is automatically set to manual for
the window (undo this with "setw -u window-size"). resize-window works
in a similar way to resize-pane (-U -D -L -R -x -y flags) but also has
-a and -A flags. -a sets the window to the size of the smallest client
(what it would be if window-size was smallest) and -A the largest.

For the same behaviour as force-width or force-height, use
resize-width -x or -y.

If the global window-size option is set to manual, the default-size
option is used for new windows. If -x or -y is used with new-session,
that sets the default-size option for the new session.

The maximum size of a window is 10000x10000. But expect applications
to complain and higher memory use if you make a window that big. The
minimum size is the size required for the current layout including
borders.

This change allows some code improvements, most notably that since
windows can now never be cropped, that code can be removed from the
layout code, and since panes can now never be outside the size of the
window, window_pane_visible can be removed.
2018-08-20 15:22:14 +01:00

599 lines
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/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/time.h>
#include <fnmatch.h>
#include <pwd.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "tmux.h"
extern const struct cmd_entry cmd_attach_session_entry;
extern const struct cmd_entry cmd_bind_key_entry;
extern const struct cmd_entry cmd_break_pane_entry;
extern const struct cmd_entry cmd_capture_pane_entry;
extern const struct cmd_entry cmd_choose_buffer_entry;
extern const struct cmd_entry cmd_choose_client_entry;
extern const struct cmd_entry cmd_choose_tree_entry;
extern const struct cmd_entry cmd_clear_history_entry;
extern const struct cmd_entry cmd_clock_mode_entry;
extern const struct cmd_entry cmd_command_prompt_entry;
extern const struct cmd_entry cmd_confirm_before_entry;
extern const struct cmd_entry cmd_copy_mode_entry;
extern const struct cmd_entry cmd_delete_buffer_entry;
extern const struct cmd_entry cmd_detach_client_entry;
extern const struct cmd_entry cmd_display_message_entry;
extern const struct cmd_entry cmd_display_panes_entry;
extern const struct cmd_entry cmd_down_pane_entry;
extern const struct cmd_entry cmd_find_window_entry;
extern const struct cmd_entry cmd_has_session_entry;
extern const struct cmd_entry cmd_if_shell_entry;
extern const struct cmd_entry cmd_join_pane_entry;
extern const struct cmd_entry cmd_kill_pane_entry;
extern const struct cmd_entry cmd_kill_server_entry;
extern const struct cmd_entry cmd_kill_session_entry;
extern const struct cmd_entry cmd_kill_window_entry;
extern const struct cmd_entry cmd_last_pane_entry;
extern const struct cmd_entry cmd_last_window_entry;
extern const struct cmd_entry cmd_link_window_entry;
extern const struct cmd_entry cmd_list_buffers_entry;
extern const struct cmd_entry cmd_list_clients_entry;
extern const struct cmd_entry cmd_list_commands_entry;
extern const struct cmd_entry cmd_list_keys_entry;
extern const struct cmd_entry cmd_list_panes_entry;
extern const struct cmd_entry cmd_list_sessions_entry;
extern const struct cmd_entry cmd_list_windows_entry;
extern const struct cmd_entry cmd_load_buffer_entry;
extern const struct cmd_entry cmd_lock_client_entry;
extern const struct cmd_entry cmd_lock_server_entry;
extern const struct cmd_entry cmd_lock_session_entry;
extern const struct cmd_entry cmd_move_pane_entry;
extern const struct cmd_entry cmd_move_window_entry;
extern const struct cmd_entry cmd_new_session_entry;
extern const struct cmd_entry cmd_new_window_entry;
extern const struct cmd_entry cmd_next_layout_entry;
extern const struct cmd_entry cmd_next_window_entry;
extern const struct cmd_entry cmd_paste_buffer_entry;
extern const struct cmd_entry cmd_pipe_pane_entry;
extern const struct cmd_entry cmd_previous_layout_entry;
extern const struct cmd_entry cmd_previous_window_entry;
extern const struct cmd_entry cmd_refresh_client_entry;
extern const struct cmd_entry cmd_rename_session_entry;
extern const struct cmd_entry cmd_rename_window_entry;
extern const struct cmd_entry cmd_resize_pane_entry;
extern const struct cmd_entry cmd_resize_window_entry;
extern const struct cmd_entry cmd_respawn_pane_entry;
extern const struct cmd_entry cmd_respawn_window_entry;
extern const struct cmd_entry cmd_rotate_window_entry;
extern const struct cmd_entry cmd_run_shell_entry;
extern const struct cmd_entry cmd_save_buffer_entry;
extern const struct cmd_entry cmd_select_layout_entry;
extern const struct cmd_entry cmd_select_pane_entry;
extern const struct cmd_entry cmd_select_window_entry;
extern const struct cmd_entry cmd_send_keys_entry;
extern const struct cmd_entry cmd_send_prefix_entry;
extern const struct cmd_entry cmd_set_buffer_entry;
extern const struct cmd_entry cmd_set_environment_entry;
extern const struct cmd_entry cmd_set_hook_entry;
extern const struct cmd_entry cmd_set_option_entry;
extern const struct cmd_entry cmd_set_window_option_entry;
extern const struct cmd_entry cmd_show_buffer_entry;
extern const struct cmd_entry cmd_show_environment_entry;
extern const struct cmd_entry cmd_show_hooks_entry;
extern const struct cmd_entry cmd_show_messages_entry;
extern const struct cmd_entry cmd_show_options_entry;
extern const struct cmd_entry cmd_show_window_options_entry;
extern const struct cmd_entry cmd_source_file_entry;
extern const struct cmd_entry cmd_split_window_entry;
extern const struct cmd_entry cmd_start_server_entry;
extern const struct cmd_entry cmd_suspend_client_entry;
extern const struct cmd_entry cmd_swap_pane_entry;
extern const struct cmd_entry cmd_swap_window_entry;
extern const struct cmd_entry cmd_switch_client_entry;
extern const struct cmd_entry cmd_unbind_key_entry;
extern const struct cmd_entry cmd_unlink_window_entry;
extern const struct cmd_entry cmd_up_pane_entry;
extern const struct cmd_entry cmd_wait_for_entry;
const struct cmd_entry *cmd_table[] = {
&cmd_attach_session_entry,
&cmd_bind_key_entry,
&cmd_break_pane_entry,
&cmd_capture_pane_entry,
&cmd_choose_buffer_entry,
&cmd_choose_client_entry,
&cmd_choose_tree_entry,
&cmd_clear_history_entry,
&cmd_clock_mode_entry,
&cmd_command_prompt_entry,
&cmd_confirm_before_entry,
&cmd_copy_mode_entry,
&cmd_delete_buffer_entry,
&cmd_detach_client_entry,
&cmd_display_message_entry,
&cmd_display_panes_entry,
&cmd_find_window_entry,
&cmd_has_session_entry,
&cmd_if_shell_entry,
&cmd_join_pane_entry,
&cmd_kill_pane_entry,
&cmd_kill_server_entry,
&cmd_kill_session_entry,
&cmd_kill_window_entry,
&cmd_last_pane_entry,
&cmd_last_window_entry,
&cmd_link_window_entry,
&cmd_list_buffers_entry,
&cmd_list_clients_entry,
&cmd_list_commands_entry,
&cmd_list_keys_entry,
&cmd_list_panes_entry,
&cmd_list_sessions_entry,
&cmd_list_windows_entry,
&cmd_load_buffer_entry,
&cmd_lock_client_entry,
&cmd_lock_server_entry,
&cmd_lock_session_entry,
&cmd_move_pane_entry,
&cmd_move_window_entry,
&cmd_new_session_entry,
&cmd_new_window_entry,
&cmd_next_layout_entry,
&cmd_next_window_entry,
&cmd_paste_buffer_entry,
&cmd_pipe_pane_entry,
&cmd_previous_layout_entry,
&cmd_previous_window_entry,
&cmd_refresh_client_entry,
&cmd_rename_session_entry,
&cmd_rename_window_entry,
&cmd_resize_pane_entry,
&cmd_resize_window_entry,
&cmd_respawn_pane_entry,
&cmd_respawn_window_entry,
&cmd_rotate_window_entry,
&cmd_run_shell_entry,
&cmd_save_buffer_entry,
&cmd_select_layout_entry,
&cmd_select_pane_entry,
&cmd_select_window_entry,
&cmd_send_keys_entry,
&cmd_send_prefix_entry,
&cmd_set_buffer_entry,
&cmd_set_environment_entry,
&cmd_set_hook_entry,
&cmd_set_option_entry,
&cmd_set_window_option_entry,
&cmd_show_buffer_entry,
&cmd_show_environment_entry,
&cmd_show_hooks_entry,
&cmd_show_messages_entry,
&cmd_show_options_entry,
&cmd_show_window_options_entry,
&cmd_source_file_entry,
&cmd_split_window_entry,
&cmd_start_server_entry,
&cmd_suspend_client_entry,
&cmd_swap_pane_entry,
&cmd_swap_window_entry,
&cmd_switch_client_entry,
&cmd_unbind_key_entry,
&cmd_unlink_window_entry,
&cmd_wait_for_entry,
NULL
};
void
cmd_log_argv(int argc, char **argv, const char *prefix)
{
int i;
for (i = 0; i < argc; i++)
log_debug("%s: argv[%d]=%s", prefix, i, argv[i]);
}
int
cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
{
size_t arglen;
int i;
if (argc == 0)
return (0);
cmd_log_argv(argc, argv, __func__);
*buf = '\0';
for (i = 0; i < argc; i++) {
if (strlcpy(buf, argv[i], len) >= len)
return (-1);
arglen = strlen(argv[i]) + 1;
buf += arglen;
len -= arglen;
}
return (0);
}
int
cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
{
int i;
size_t arglen;
if (argc == 0)
return (0);
*argv = xcalloc(argc, sizeof **argv);
buf[len - 1] = '\0';
for (i = 0; i < argc; i++) {
if (len == 0) {
cmd_free_argv(argc, *argv);
return (-1);
}
arglen = strlen(buf) + 1;
(*argv)[i] = xstrdup(buf);
buf += arglen;
len -= arglen;
}
cmd_log_argv(argc, *argv, __func__);
return (0);
}
char **
cmd_copy_argv(int argc, char **argv)
{
char **new_argv;
int i;
if (argc == 0)
return (NULL);
new_argv = xcalloc(argc + 1, sizeof *new_argv);
for (i = 0; i < argc; i++) {
if (argv[i] != NULL)
new_argv[i] = xstrdup(argv[i]);
}
return (new_argv);
}
void
cmd_free_argv(int argc, char **argv)
{
int i;
if (argc == 0)
return;
for (i = 0; i < argc; i++)
free(argv[i]);
free(argv);
}
char *
cmd_stringify_argv(int argc, char **argv)
{
char *buf;
int i;
size_t len;
if (argc == 0)
return (xstrdup(""));
len = 0;
buf = NULL;
for (i = 0; i < argc; i++) {
len += strlen(argv[i]) + 1;
buf = xrealloc(buf, len);
if (i == 0)
*buf = '\0';
else
strlcat(buf, " ", len);
strlcat(buf, argv[i], len);
}
return (buf);
}
static int
cmd_try_alias(int *argc, char ***argv)
{
struct options_entry *o;
int old_argc = *argc, new_argc;
char **old_argv = *argv, **new_argv;
u_int size, idx;
int i;
size_t wanted;
const char *s, *cp = NULL;
o = options_get_only(global_options, "command-alias");
if (o == NULL || options_array_size(o, &size) == -1 || size == 0)
return (-1);
wanted = strlen(old_argv[0]);
for (idx = 0; idx < size; idx++) {
s = options_array_get(o, idx);
if (s == NULL)
continue;
cp = strchr(s, '=');
if (cp == NULL || (size_t)(cp - s) != wanted)
continue;
if (strncmp(old_argv[0], s, wanted) == 0)
break;
}
if (idx == size)
return (-1);
if (cmd_string_split(cp + 1, &new_argc, &new_argv) != 0)
return (-1);
*argc = new_argc + old_argc - 1;
*argv = xcalloc((*argc) + 1, sizeof **argv);
for (i = 0; i < new_argc; i++)
(*argv)[i] = xstrdup(new_argv[i]);
for (i = 1; i < old_argc; i++)
(*argv)[new_argc + i - 1] = xstrdup(old_argv[i]);
log_debug("alias: %s=%s", old_argv[0], cp + 1);
for (i = 0; i < *argc; i++)
log_debug("alias: argv[%d] = %s", i, (*argv)[i]);
cmd_free_argv(new_argc, new_argv);
return (0);
}
struct cmd *
cmd_parse(int argc, char **argv, const char *file, u_int line, char **cause)
{
const char *name;
const struct cmd_entry **entryp, *entry;
struct cmd *cmd;
struct args *args;
char s[BUFSIZ];
int ambiguous, allocated = 0;
*cause = NULL;
if (argc == 0) {
xasprintf(cause, "no command");
return (NULL);
}
name = argv[0];
retry:
ambiguous = 0;
entry = NULL;
for (entryp = cmd_table; *entryp != NULL; entryp++) {
if ((*entryp)->alias != NULL &&
strcmp((*entryp)->alias, argv[0]) == 0) {
ambiguous = 0;
entry = *entryp;
break;
}
if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
continue;
if (entry != NULL)
ambiguous = 1;
entry = *entryp;
/* Bail now if an exact match. */
if (strcmp(entry->name, argv[0]) == 0)
break;
}
if ((ambiguous || entry == NULL) &&
server_proc != NULL &&
!allocated &&
cmd_try_alias(&argc, &argv) == 0) {
allocated = 1;
goto retry;
}
if (ambiguous)
goto ambiguous;
if (entry == NULL) {
xasprintf(cause, "unknown command: %s", name);
return (NULL);
}
cmd_log_argv(argc, argv, entry->name);
args = args_parse(entry->args.template, argc, argv);
if (args == NULL)
goto usage;
if (entry->args.lower != -1 && args->argc < entry->args.lower)
goto usage;
if (entry->args.upper != -1 && args->argc > entry->args.upper)
goto usage;
cmd = xcalloc(1, sizeof *cmd);
cmd->entry = entry;
cmd->args = args;
if (file != NULL)
cmd->file = xstrdup(file);
cmd->line = line;
if (allocated)
cmd_free_argv(argc, argv);
return (cmd);
ambiguous:
*s = '\0';
for (entryp = cmd_table; *entryp != NULL; entryp++) {
if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
continue;
if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
break;
if (strlcat(s, ", ", sizeof s) >= sizeof s)
break;
}
s[strlen(s) - 2] = '\0';
xasprintf(cause, "ambiguous command: %s, could be: %s", name, s);
return (NULL);
usage:
if (args != NULL)
args_free(args);
xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
return (NULL);
}
char *
cmd_print(struct cmd *cmd)
{
char *out, *s;
s = args_print(cmd->args);
if (*s != '\0')
xasprintf(&out, "%s %s", cmd->entry->name, s);
else
out = xstrdup(cmd->entry->name);
free(s);
return (out);
}
/* Adjust current mouse position for a pane. */
int
cmd_mouse_at(struct window_pane *wp, struct mouse_event *m, u_int *xp,
u_int *yp, int last)
{
u_int x, y;
if (last) {
x = m->lx;
y = m->ly;
} else {
x = m->x;
y = m->y;
}
if (m->statusat == 0 && y > 0)
y--;
else if (m->statusat > 0 && y >= (u_int)m->statusat)
y = m->statusat - 1;
if (x < wp->xoff || x >= wp->xoff + wp->sx)
return (-1);
if (y < wp->yoff || y >= wp->yoff + wp->sy)
return (-1);
if (xp != NULL)
*xp = x - wp->xoff;
if (yp != NULL)
*yp = y - wp->yoff;
return (0);
}
/* Get current mouse window if any. */
struct winlink *
cmd_mouse_window(struct mouse_event *m, struct session **sp)
{
struct session *s;
struct window *w;
if (!m->valid || m->s == -1 || m->w == -1)
return (NULL);
if ((s = session_find_by_id(m->s)) == NULL)
return (NULL);
if ((w = window_find_by_id(m->w)) == NULL)
return (NULL);
if (sp != NULL)
*sp = s;
return (winlink_find_by_window(&s->windows, w));
}
/* Get current mouse pane if any. */
struct window_pane *
cmd_mouse_pane(struct mouse_event *m, struct session **sp,
struct winlink **wlp)
{
struct winlink *wl;
struct window_pane *wp;
if ((wl = cmd_mouse_window(m, sp)) == NULL)
return (NULL);
if ((wp = window_pane_find_by_id(m->wp)) == NULL)
return (NULL);
if (!window_has_pane(wl->window, wp))
return (NULL);
if (wlp != NULL)
*wlp = wl;
return (wp);
}
/* Replace the first %% or %idx in template by s. */
char *
cmd_template_replace(const char *template, const char *s, int idx)
{
char ch, *buf;
const char *ptr, *cp, quote[] = "\"\\$";
int replaced, quoted;
size_t len;
if (strchr(template, '%') == NULL)
return (xstrdup(template));
buf = xmalloc(1);
*buf = '\0';
len = 0;
replaced = 0;
ptr = template;
while (*ptr != '\0') {
switch (ch = *ptr++) {
case '%':
if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
if (*ptr != '%' || replaced)
break;
replaced = 1;
}
ptr++;
quoted = (*ptr == '%');
if (quoted)
ptr++;
buf = xrealloc(buf, len + (strlen(s) * 3) + 1);
for (cp = s; *cp != '\0'; cp++) {
if (quoted && strchr(quote, *cp) != NULL)
buf[len++] = '\\';
if (quoted && *cp == ';') {
buf[len++] = '\\';
buf[len++] = '\\';
}
buf[len++] = *cp;
}
buf[len] = '\0';
continue;
}
buf = xrealloc(buf, len + 2);
buf[len++] = ch;
buf[len] = '\0';
}
return (buf);
}
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